Harmonic telegraphy



(N0 Model.)

2 Sheets-Sheet 1.

F.-VAN RYSSELBERGHE.

" HARMONIG TELBGRAPHY.

Patented Aug. 13, 1889.

(N0 Model.) 2 SheetsSheet 2.

- P. VAN RYSSELBERC%HE.

HARMONIC TELEGRAPHY N0. 409,157. Patented Aug. 1a, 1889..

ference with i-he various receiving deviees from incluced currents 01 other dist-urbing eauses.

It is well known (hat any current (no mat ter what be i;he orcler 0f the makes and breaks) passing through the magnetic coiis will aifeet to a greater or less extent all the sectors and eause some vibrations therein bu ib is also weil known tl1at these vibrat-ions will n0t 1*each their full amplitude nnless the makes and breaks 01 ehanges 0f otential in tl1e cnrrent are ab eertain regular intervals eorresponding with the pitch 0f the particu- 1m seeuor t0 be aifeeted. It is this prineiple which enables 1ne t0 so aclj usL the reeeiving apparatus tlmt it Shell no be n1aterially affected by incluced enrrents and the like, wl1ieh would tend to produce false signals in the reeeivers, zu1d this I aeeomplish by so adjnsting ihe contaots (hat the local cireuit shall not be closecl throngh then1 except when tl1e seetors are vibrafued uncler the influence of proper cur1entS. In other words i3he (3011- acts are adjusted over the induced-eur- 1ent effects, and a1e still within the range 0f the vibr'ations when the sect-0rs zu*e properly vibrating. This feature not only enables 1ne t0 overcome the effects 0f incluoed currents, bu enables me t0 more clearly cliiferentiate tl1e numerous receiving deviees 2mcl 110 so adjust tl1e parts that signals intended for one sector will. affeci: filmt sector only suffieiently t0 proclnce the signals in the local circuit 0f rhat seetor and while they will afiect all i3l1e others they will'noc so affect then1 as t0 cause a elosure 0f the contaets ancl thereby procluce signals in the other cirenits.

While variotfs fornns 0f receiving-instrnments may be used in these l0eal circuits, I preferably make nse 0f an ordinary magnetotelephone P, as this instrument is peculiarly adaptecl t0 operating in this conneetion, ancl gives clear-cut Signals, whieh are 1eadily (listingnished and not liable t0 muilation.

I have sl1own in tl1e aeconnpanying dmwings zu way 0f arranging all ehe local receivinginstrnments in a Single eircuiu, in which Q is tl1e battery, one pole of whieh is connected to the bincling-post 3 ancl thenee to the 1in1 O of the magnen, and of .eourse the curreni; passes through the particular contaet piece I 110 the corresponcling eonta-ct-piece J, the lever K to the post O, and thenee by the binding-posts 4, 5, &c., 0f the particular telepl1one back 130 tl1e other pole 0f tl1e battery Q.

- I rom alle above description the operation of my clevice Will be 1eadily understoocl, and I have shown in Fig. 4 a cliagram illnstmting 0ne way 0f connecting itnp in a telegraphcircnit. In this figu1e R represents a circuitbreaker ope1ated bya 11101301S and controlled by a l'egulator T. R is the battery 01: alocal eircuit having tlnee branehes, inelncling keys 9 0" 'r ,each having a brush bearing npon one portion 0f tl1e circuit-breaker R &11d all 0011- neeted witl1 the primary c0il U 0f tl1e inclueti on-coil. It will be understoocl that Wl1en either one 01' all 0f the keys 7" a1e elosed a corresponcling series 0f interrupcions are produced in the eurrent 0f the primary coil U, and these incluce in nl1e seeondary eoil U 0f the induction-coil, which is included in the main line, a similar series 0f interruptions. These vibrations passing over i;he n1ain line Will divide ab the 1101ne reoeiving-instrument, a portion going through the e0il f of t-he artifieial lineF ancl to ground, and the remainder going through tl1e coi1s e 6 to line, zu1d this Will resnlt, as is well k0wn, in renclering neutral the home receiving instrument. The currents coming 0ver the line from tl1e distant station, however, Will pass through l1e eoils e and e, whieh a1e wound in the szune clirection, and through the artifieial line t0 gronnd,and these 0f course will affect tl1e magnet 0f iahe receiving-instrnment zmcl procluce vibrations in the seetors thereof in 2L manner herecofore stated.

The arrangement 0f the coi1 G prodneing the magnetic fielcl is elearly illustmred in the diagrann, and in Fig. 1 I hzwe sl10wn it 0011- neeted to the binding-posts 12 13, while the main ancl artifieial lines are connected to the bincling-posts 14, 15, and 16, as inclicatecl.

From uhe above tl1e principles 0f construetion ancl operation 0f my improvecl receiving device Will be clearly understood, and it is evident tl1at I am 1100 li1nied t0 the precise cletails shown, as they maybe varied wit-hout departing f101n ishe spirit 0f 1ny invention; but I have founcl tl1is arrangennenu and 0011- Struction i30 eonstitute an exceeclingly simple zu1d effective apparatus, which' is cheaply made ancl 11011 liable t0 geb 0ut 0f Order, and whieh is eifective in tl1e l1ands 0f ordinzwy operafcors.

IrVhat I clainn is 1. In a t011e 01 harmonie ielegmph, a nmg= net eontrolled by main-line currents, and a series 0f sectors adjusable 130 vibrate at dif fereno mies arrangecl in proximity 150 sind operared by seid magnets, substantially as described.

2. In a t-0ne o1 harmonie telegraph, a magnet eontrollecl by main-line currens, a series of sectors adjustable t0 vibmte at different rates arrangecl in proxi mity to ancl operated by said magnet, eontaet devices earried by ehe seetors, ancl adjustable contaei; devices arrangecl t0 make eont-act Witl1 tl1e first c0n taet devices, snbsiantially as deseribed.

3. In a t0ne 01 l1armonie telegraph, a magnei: operatecl by 1nain-line eurrents, a series 0f sectors acljnstable t0 vibrate ab clifierent 1rates opemtecl t-hereby carrying contaotpieces, ancl a series of levers carrying otl1er eontact-pieces arrangecl t0 co-opemte therewith, substantially as deseribed.

et. In a tone 01 harmonie telegraph, a magnet controlled by main-line eurrents and a series 0f vibrators operated thereby, t-he vibrators being provided. Witl1 adjustable weights t0 regnlate their rates of vibmizion, substantially as described... 

